| Ratings 
 
 
  | Year | Rank | Edo | Dev. | Games |  
  | 1872 | 201 | 2161 | (134) | 8 |  
  | 1873 | 196 | 2167 | (135) | 0 |  
  | 1874 | 191 | 2174 | (136) | 0 |  
  | 1875 | 194 | 2181 | (137) | 0 |  
  | 1876 | 180 | 2188 | (137) | 0 |  
  | 1877 | 168 | 2195 | (137) | 0 |  
  | 1878 | 160 | 2201 | (137) | 0 |  
  | 1879 | 157 | 2208 | (137) | 0 |  
  | 1880 | 160 | 2215 | (137) | 0 |  
  | 1881 | 167 | 2222 | (136) | 0 |  
  | 1882 | 171 | 2228 | (136) | 0 |  
  | 1883 | 181 | 2235 | (135) | 0 |  
  | 1884 | 188 | 2242 | (133) | 0 |  
  | 1885 | 188 | 2249 | (132) | 0 |  
  | 1886 | 181 | 2255 | (130) | 3 |  
 
Rating table notes
 | 
| Biographical data |  | 
   | Name: Dobruský, Jan |  | Also known as: Dr. J. Dobruský |  
   | Born: 28 Aug. 1853 |  
   | Died: 31 May 1907 |  |  |  
   | Notes: |  
   | The Deutsche Schachzeitung of July 1872 (p.200) and the Österreichische Schachzeitung of 1 Jun. 1872 (p.33) have 'J. Dobruvsky'. |  |  |  |  
   | References |  | 
| Books |  
   | Fiala, Olrich Duras, Vol.1, page 47, 111, 296, 378 |  
   | Gaige, Chess Personalia, page 95 |  
   | Mrazík and Skalička, Šachová Příručka, page 68 |  | Periodicals |  
   | [DSZ], vol. 27, no. 7, July 1872, page 200 |  
   | [ILN], vol. 61, no. 1715, 20 July 1872, page 71 |  
   | [OSZ], vol. 1, no. 5, 1 June 1872, page 33 |  
   | [OSZ], vol. 1, no. 11, 1 Sep. 1872, page 84 |  
   | [OSZ], vol. 2, no. 24, 16 Mar. 1873, page 82 |  
   | [Svet], 31 May 1872, page 260 |  
   | [Svet], vol. 20, no. 26, 4 June 1886, page 416 |  |  |